You can now customize the oil charges for your character. By default, it is set to double (before the bonuses from the Fixative talent) but you can change it to any number.

This is done by opening the r4Player.ws file inside the Custom Oil Charges mod and searching for "modCustomOilCharges", it should be in the line 1071. At the end of the line, you will find the variable and you can change it to whatever number you want.

The easiest way to do this is to replace it with a number (for example, replace it with 0.5 to halve the charges or 100 (or some other ridiculously high number) to have functionally infinite charges).